{
  "manageEntity": {
    "action": "Save",
    "entityId": "999732105",
    "entityType": "Track",
    "nonce": "0x2671d16d799c3f6543cf0672f9d114eac29e499029d6cef496cdf3d158823d04",
    "signature": "0xb457149f7b081ff6690ce39f98414848ff5ab8e59b0f6cb278eadd081d5d358a0bfa7a2070977abf2d6655c59939dd72a752ca755153356512cffce284d608a51c",
    "signer": "0xd14727622fa26ECD6Ad72cADB6b96823f5fb65DD",
    "userId": "173494086"
  }
}